The accounting records of Splish Brothers Inc. show the following data.

$\backslash$table$[[$Beginning inventory,$2,880$ units at$],[$Purchases$,7,870$ units at$],[$Sales$,9,380$ units at$]]$

$($a$)$

Determine cost of goods sold during the period under a periodic inventory system using the FIFO method.

FIFO

Cost of goods sold during the period

$